Ares wrote:Yes, they look identical from the outside. Question is, do they use the same chip/firmware/driver?
@Ares, if you compare the technical specifications listed for the Technaxx TX-25 at http://www.technaxx.de/download/downloa ... me=803.pdf
with the data on the eBay pages then you find much more than a strong visual appearance match: e.g. 15M pixel 4480 x 3360 photo resolution, JPEG, video resolution 1440 x 1080p with 30 fps. The probability of two different chips sharing these same technical specifications for glasses with the same form factor is very low. In theory there could be one and the same chip design binned into fully functional and partially functional chips during testing at the factory, but I do not consider that likely here. I think that the Technaxx TX-25 is just a rebranded version of the exact same glasses, at a premium price. The UVC support of the Technaxx TX-25 does appear rather quirky under Windows though. Initially I got 1280 x 720 video, but the video format dialog under Microsoft Video for Windows did not list this format but only 640 x 480 and 320 x 240. Unfortunately, selecting one of these lower resolution formats gives a garbled bottom slice in the camera view, apparently because the glasses work in 640 x 360 mode when selecting 640 x 480, and 320 x 180 mode when selecting 320 x 240. The 1280 x 720 mode did not have the garbled bottom slice, but later I could not switch back to this format under Microsoft Video for Windows but only under Microsoft DirectShow (e.g. in Amcap). This does not appear to be a problem with Windows as such, because when I use another UVC compliant webcam, the Logitech C270, I can select any video format without these format mismatching issues. I also got crashes when switching between connected webcams when the Technaxx TX-25 was one of them. I suppose one will not be able to flash the Technaxx TX-25 with new/better firmware. I do not know if any of the above quirky behaviors will show up when using the glasses with the Raspberry Pi.
USB Camera Glasses for the Blind